Improvement in locks



GEORGE BAYER Improvement in Locks.

Patented Feb. 6,1872.

7 lnmerttor'. /Z/

GEORGE BAYER, OF NEW YORK, N. Y.

IMPRQVEMENT lN LQCKS.

Specification forming part of Letters Patent No. 123,444, dated February6, 1872.

To all whom 'it may concern: 7

Be it known that I, GEORGE BAYER, of the city, county, and State of NewYork, have inventedanew and useful lniprovementin Locks; and I do herebydeclare the following to be a full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and use thesame, reference being had to the ac companying drawing forming part ofthis specification, in which drawing Figure 1 represents a sectionalside view of my look when arranged for a door which opens to the right.Fig. 2 is a similar view of the same when arranged for a door whichopens to the left.

Similar letters indicate corresponding parts.

This invention relates to a lock, the bolt and tumbler of which are soarranged in relation to two guide-pins and the key-hole that the sainecan be changed from one side of the keyhole to the other, and therebythe lock is convertedfrom aright-handed toalet't-handed lock, or viceversa, and the owner of the lock is enabled to apply the same to a dooropening to the right or' to a door opening to the left as as occasionmay require.

In the drawing, the letter A designates a lock-plate, one edge of whichis turned up at right angles and provided with a guide-slot for the headof the bolt B. The shank of this bolt is furnished with a slot, a,which, when said bolt is in the position shown in Fig. 1, catches overthe guide-pin b, and when the bolt is in the position shown in Fig. 2said guide-slot catches over the guide-pin b These guide-pins are secured in the lock-plate A, at equal distances from the key-hole, and 011opposite sides thereof, so that the key 0 will act 011 the bolt as wellwhen said bolt is in the position shown in Fig. 1 as in the positionshown in Fig. 2. l) is the tumbler, which is provided with a hole tocatch over one of the guide-pins b or 1), according to the position ofthe bolt, and the tumbler-spring e bears either against the stud f oragainst the stud f, said studs being intended to support the inner plateof the lock, and being placed at equal distances from the key-hole. Bythis arrangement of the pins 1) b and studs f f in relation to thekey-hole, and by the form and construction of the tumbler and bolt, I amenabled to change the position of these last-named parts from that shownin Fig. 1 to that shown in Fig. 2; and by these means the lock can bereadily converted from right-handed to left-handed, or vice versa,according to the position of the door to which the lock is to beapplied. In the drawing I have represented a key with a hollow stem tocatch over a guide-pin secured in the lock-plate, but it is obvious thatmy invention is applicable with equal advantage to looks with key-holesin the front and in the back plates.

What I claim as new, and desire to secure by Letters Patent, is-

A reversible lock, provided with two guidepins, 1) I), for the bolt Band tumbler D, and with two studs, ff", for the bearing ofthetumhler-spring c, said guide-pins and studs being at equal distancesfrom the key-hole or guidepins of the key, substantially as shown anddescribed.

GEORGE BAYER.

Witnesses:

WV. HAUFF, E. F. KASTENHUBER.

